Calculating-machine.



C2. LAM HMO A D, WGH

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W1 EEE-EE: y MKM UFL-LEE? om 0 9 1 L 2. V.. L U J D E ml. N E T A D.. L. H An W C. .,T...

CALGULATING MACHINE.

7 SHEETS-SHEET 2.

APPLICATION FILED D0T.231. 1905.

PATENTED JLY 21, 1908.l

J. c. WAHL. CALGULATING MACHINE.

APPLICATION FILED 0UT.23, 1905.

' '1 suma-SHEET a.

. v 1 Je, nu 2 R Tm @1% PATENTED JULY 21, 1908.

No. 93319. J. G. WAHL.

GALGULATING MACHINE.

APPLICATION TILED GT.23. 1905.

7 SHEETS-SHEET 4.

hv'atr w v5g 46-. J4 57 Jahn E- Wahl,

'ES-m68@ t, l" Win-asses: @JLA/7( PATENTED JULY 21, 1908.

J c WAHL GALGULATING MACHINE..

APPLIOAVTIONAFIALED 00T.23, 1905.

7 SHEETS-SHEET 5.

hva-IEP Jump- Wam STATES PAT-ENT OFFICE. JOHN o. WAHI., or cHIcAGoIL-LINOIS, AssiGNoH To WAHI. ADDING MACHINE COMPANY, A

CORPORATION OFILLINOIs.

CALCULATING-MACHINE I Specification of Inet-ters Patent.

YPatented Jui-y 21, 190s.

i To all 'itmay concern:

Be it known that I, JOHN WAHAI., citizen of the United States, `residing at Chic o, in

the county of Cook and State of Illinois, ave invented a certain new and useful Improvementin Calculating-Machines, of which Athe following is a full, clear, concise, and exact l description, reference being had to the aceompanying drawings, forming a part of this specification.

HMy invention relates to calculating mafA x chines or devices, and more particularl to compact calculating mechanism adapte -for separable, attachment tov ty ew'riting 'machines for automaticallyl pe orming calculations.

. My devicejs of the same class as that d'escribed in m coending application Serial No. 256,141 ed pril 17, 1905, and the object is to -provide more simplified and improved construction and arrangement ofl the various operative arts and to provide more efficient and'simp iiied ad'usting, checkin and coir'ecting means. A evice of this kin is more particularl adapted for calculations of addition and su traction, and ma be directlyassociated with the number eys of any style of typewiiting machine and with the-escapement mechanism thereof, and upon actuation of the number keys of the machine the corresponding numbers will be printed .upon the sheet`v and simultaneously regison the indicating mechanism and ma teredV on indicating mechanism. i At the end of a calculation thedesired result will appear be coied therefrom and printed on the s eet.

he indicatin mechanism is in the form of a totalizer a apted for suitable mechanical association `to travelwith the escapement carriage, while the driving mechanism for the `indicating mechanismv is fixed to the type.- writer frame and its various operative parts are suitabl associated with the number keys of the mac ine. There are also several auxiliary controlling,adjusting,l checking and correcting mechanisms associated withbo'th l the indicatingl and the driving mechanisms. .'l`hese.auxiliary mechanisms perform very important functions.. One of said mechanisms serves u on actuation of the ke to correct for any ost motion or relative isplace 4 mentof the machine parts and to set these parts sothat upon actuation of key there will befpropeivalinement and the calculating parts' printing parts in the proper posi-l li'ne ofFig. 7. tional'view taken on line 9-#9 of Fig. 7; Fig.

'non fer erformin their functions. This same mec anism a so prevents escapement.

or slipping of the carriage until 4the calculation and printiighas been completed.

It happens very often in the-operation lof machines of this kindthat a key is not'moved to the -endof its stroke, or that two or more keys are struck at the same time. This, of course, unless corrected for will introduce errors into the calculations, and the purpose 'of another of the auxiliary mechanisms -is to cause restoration of wrongfullyor weidentally actuated parts and to restore calculating mechanism parts to withdraw therefrom the wrong or mdesired calculation. Other undesirable actuations or displacements of the operative partsas those, for instance, due to momentum of the arts or -to lost motion, are prevented b t ese auxiliary mechan isms. In genera it may be stated that all operative parts are securely locked against displacement until the'particular function intended for them is to be performed, this insuring great reliability and eHiciency.

The exact operation and detailed construction of the various main mechanism arts and of the auxiliary mechanism 1parts wl be best to t understood by reference e accompanying drawin s which show my device attached to the well known Remington type'writing ma-v chine-,and in which drawings, i v

Figure 1 is a side elevation of atypewriting machine showing the calculating mechan ism attachment associated therewith. Fig. 2 is a'front view of the typewriting machine with attached calculating mechanism'. Fig.

3 is a detached view of thecalculating mechanism and actuatingor driving mechanism therefor, parts being shown in section Aand parts being broken away for clear-ness. Fig. 4 is a view similar to Fig: 3, showing the ap-` paratus 'in aj different o erative osition.

ig. '5 is a front view of t e parts s own in Figs. 3 and 4. Fig. 6 is a detached plan u view of the main driving gear of the driving mechanism and adjusting mechanism theres ingl auxiliary controlling andA adjusting mechanisms, parts being broken away, Fig. 8 is a detached sectional view taken on Fig. 9 is a detached sec -10is ja'fdeta'clied sectional view takenv on 1ii1e.10-'10 of Fig. 7. Fig. 11 is a detached plan view of the totalizer frame showing the Ico for. Fig. 7 is a-view similar to Fig. 5, showyarrangement of the totalizer` mechanisms.

Fig. 12 is adetached enlarged view showing detent lever mechanism for locking the rst gear of the totalizer mechanism. Fig. 13 is a detached view showing locking mechanisml vfor engaging the indicating mechanism with the escapement carriage. "Fig. x14 is asec'- tional view oi1'"a diametrical plane through the locking mechanism in Fig. 13 to show the connection of this locking mechanism' with the indicating mechanism supporting frame.v Fig. 1`5 isa detached view of the adjustingrack for tabulating mechanism.

' Fig. 1.6 is a view showing a modified arrangement of the totalizer gear wheels within their supporting frame; Fig. 17 is a Iview of some of the parts shown in Fig. 10 While.

a Remington typewriting machine may be adapted to be attached to other machines with equaly facility.

A horizontal track bar 1 is secured to hangers 2--2 fastened to thef frame 3 of the typewritin machine by means of screws 4 4 as best s own in Fig. 2.-` This track bar. or frame has an upper and a lower raceway or track 5 and 6 respectively adapted to b e engaged by plper and lower rollers 7 and 8 pivoted from s afts 9 and 9 extending from the back of the totalizer isupporting frame 10. Thistotalizer frame is thus adapted .for lon'- gitudinal travel along the track frame 1, and the arm 11 connects with this frame and with the bar or arm 12 secured to the rear non shiftable` or comparatively stationary part 13'of the typewriter carriage by means of the screws 14. l This arm 12 is disposed 'at the side of the machine in such manner as to clear the front shiftable or relatively movable part 15 of the escapement carriage supporting the ty eroller 16, this frame, as is well known, eing adapted to be swung.

.j about the stationary frame 13 so that printe eX- ing on the sheet held on the roller can amined during the operation of the machine, and it is thereforeunnec'essary to disconnect the indicating mechanism each time that the front part 15 is raised, this being va very important feature, as otherwise there might be disarrangement or displacement of the indicating mechanism parts which vwould result in errors. The arm 12 is, however, adapted for se arable engagement with the arm 11 so that t e typewriting machine can be used in its ordinary capacity entirely independently of .the calculating mechanism; At the end ofthe arm 11 a head`16 is provi-'ded having a tongue or extension 17 for engagement in the slot 18 through the front end o f the arm 12. To connect the indicating mechanism with the vtracks 5 and 6 on the track bar lare escapement carriage the head 16 is turned to carry the arm 17 `within this slot, and to disconnect the indicatingv` mechanism the head 1-6 is turnedto disengage the tongue. Care must also be taken to' connect the totalizer supporting frame in proper relation with the escapement mechanlsm of the carriage,and the ead 16 is thereforepivoted on the sleeve 18 having adjustable threaded engagement with the end of the arm 11. A loc the escapement carriage, and to causethe' frame 10 to move in a straight longitudinal line without displacement or lost motion the ably as shown, the center parts thereo the prismatic ridges 21 and 22 respectively, having' at each side thereof the horizontal track .ways 23 and 24 respectively. The rollers 7 and 8 to correspond have the shape Vof a s ool, the cylindricalcenter 25 of each spool caring on the outer face 26'of the corresponding ridge, the angular faces 27:, bearing on the sides of the ridge part and thefcylindrical edges 28 bearing on the horizontal prefer- Y' being Q nut 19 secures the sleeve'in any ad'ust- .ed positionand the screw 20 holds the ead The totalizer supportin surfaces 23. Y This form of track and engagingspool causes the supporting frame 10` to v be atl all times perfectly rlgid Without increasin the friction. he upper and lower edges of the su porting frame 10'- are provided with V-sliaped guideways or channels 29and 30 res ectivelyf, and a totalizer framef31 has the sidg Walls 32 and 33 provided at their rear ends with the upper and lower V-shaped tongues 34 and 35 for enga in in the guideways 2,9 and 30, within W ic guideways the totalizer frame may be slid, and to secure the totalizer in anyV adjusted position on the supporting frame 10 a locking lever 36 may be suitably pivoted to the totalizer frame so that itsend y l 37 may be brought into-.engagement in any of the slots 38 along the to .front edgeof the traveling frame 10. ese slots are scaled to correspond to the spacing `distances of the typewriting machine so that the starting oint of the totalizer mayagree with that` of t e t pewriting machine. The totalizer frame w en thus adjusted in osition on the traveling frame 10 will travel ack and forth acrossl the front' of the machine with the esca ement carriage, and the-indicating and ca culatingmechanisms contained by the to'- talizer frame .will be described later.

Depending from the trackbar arearms 39 and 40 terminating res ectively in side plates 4 1 and 42 the arms being connected by a horizontal supportingplate 43, and near the center-of this supporting plate 43 .is mounted the driving frame 44, consisting ofthe side plates 45 and 46 which may be secured tothe supporting plate by the screws 47.1 Pivoted esame indicating vmechanism or totalizer which, travels across the machine. This gear wheel is rigidly secured to the sleeve-50 which is secured to -the shaft 48. To the left vof the gear Wheel 49 is the controlling gear 52 which is rigidly secured to the sleeve 51 slidably but non rotatably mounted upon the shaft 48. The two ears 49 and 52y thus always turn together ut gear 52 is smaller .54journaled in the wall 46 and the 'wall or lever 62toward the late 66.

v53 in the sleeve 51. I

inldiameter than gear 49 so as not to interfere with the totalizer as the latter travels past it. To the left of -this controlli gear in said sleeve is the groove 53. To t e rear of the shaft 48 and parallel thereto is a second shaft plate 55, this shaft bein ada ted -for longitudinal movement. As st s ownin Fig. 6 two gear wheels 56 and 57 are rigidl secured by means of a hub or sleeve 58. T `s sleeve` and the connected gear Wheels are loose upon shaft 54'so as to rotate thereon. Gear 57 is always in mesh `with the gear 52. To the left of ear 57 a collar 59 encircles'the shaft 54, an has an arm 60 extending therefrom with a bifurcated end 61 entering the groove A controlling lever 6 2 is secured to the end of the vshaft 54 and terminates in afinger piece 63, the lever 62being held in its extreme`positions of adjustment in the slots 64 `and 65 cut in thevplatev66 which is secured to the wall 46'. A spring 67 tends to draw the Ai 'will' be morelfu y described later, a segi menialdriving ear 68 is-adapted upon acturotated.

ation of keys o the machine to be moved to the dotted osition shown in Fig. 5 and then mesh with t e gear 56 and rotation of this segmental gear willl be transmitted through the gear57 and controlling gear 52 to the actuatingsgear 49 to cause rotatlon in one direction lof the indicating mechanism gear wheels en' ofthe slot is vlreac ed the gear52 will also' move to the right and the gear 56 will have beenmove'd to the right beyond the teeth of the segmental gear 68, but the gear 52-will have been moved so that upon actuation of the segmental gearits teeth will be'brought intomesh with this gear 52 only, and upon subsequent rotation of the segmental gear the actuating gear 49 will be moved in an opposite directlon. In other words, in the Vthe end walls 41 and 42. from intermediary points of the `shaft 89` eX;

n the positions shown in Figs. 5 and 6 this se mentalgear will be moved into osition of the arts shown in 5 andf i l p lbe actuated'through the" L the gear 49 reversing `gears 56 and- 57 to cause negativel or subtractin movement f the indicatin parts, while with the lever 62 at therighten of the Yplate 66 Athe `segxmentalgear 5 8will' engage directly with vt forward or addingmovements of the, indieating mechanism parts upon rotationl of the gearr49. The gear 57 is at all times mesh with the gear 52 but is ineffectiveduiing for. ward rotation of the gear 49.

e 4gear 52 it'dcausej. i

Below -the shafts 48 and 54 is pivoted a pari allel shaft 69 between the end walls A41 and 42. The segmental gear 68 beforeA referred toA is in the form of a rim 70 andarm 71 having the slot 72 at its lower end spanning'the shaft 69, and a ivot pin 73 passes throu h the arms 74 andp75 and through said sha t, whereby thesegmental gear frame ma swing laterally and when in a vertical plane to mesh with either the gear 56 or the gear 52 of the driving mechanism, as before described.

Between the shafts 48 and 54 and the shaft 69 is the shaft 76 secured in the walls 46 and 55. On this shaft is the sleeve 77 having the groove 78 in which engages the lower edge 79 of the rim 70 of the segmental gear frame.- Directly below this shaft 7 6A'is another shaft 80'to which a bell crank lever 81 is pivoted at its elbow 82, the end of the arm 83 of said bell crank lever being pivoted to the sleeve 77. The end of the other arm 84 of the bell crank lever is pivotedto the upper end of the link 85 having an elongated slot 86 at its lower end in which engages a pin 87 extending from the arm 88 extending from the shaft 89, which shaft is pivoted at its ends in From the ends and tend supporting arms 90 carrying at their ends the universal shaft 91 on which is the roller 92.

Between the rear lower ends of the end plates 41 and 42 is pivoted a shaft 93, and in suitable position over each number key of. the machine is a wi -shaped frame 94 con-V nected at its one en to the corresponding machine number key by means of an; adjustlable turn buckle 95. Adjacent to'each frame 94 is a cam arm 96 terminating in a cam surface 97. From an intermediary point `-be' tween this cam surface and the shaft 93 is a post v98 engaging in the slot 99 through the adjacent frame 94.4 For each number key also there is an actuating lever 1.00 terminating in a cam roller 101 pivoted on the extension 102. Each cam roller is ada ted for engagement with the carnsurface 97 of (corresponding cam arm 96 'so that upondeiiression of a key motion is transmitted from the frame 94 to the post 98, cam arm 96, and by means of' engagement of the cam surface 97 with the cam roller 101 the corresponding lever .100 is swung to cause' rotation of the corres onding to the amount of rotation re# the segmental gear and of the driving mechanism to move the indicating Wheel' thereof A actuating cam tion thereof due to the sudden impact with .the cam arm upon Astriking of the number taining-Wall 103 parallel to the cam surface cam slot. from the bend of each goose-neck which in 4 i `tllittion of certain keys after other keys have been depressed. For instance, as shown in atthe sides 'of the cam rojection are refdivision, or, in other words, to move frein*A .one number to the next.

lever, is struck by the underside ofthe prof,

shaft 691'a`irid a consequent'rotation of 'the :agi ffiital gear frame 68. yThe several actuating levers 100 are angularly displaced The actuati A," verA for key number 9 will be displacld /so that upon engagementwith the correspondingcam framey rotation Will be produced of anism to cause the engaged indicating V-mechthrou gh 9 divisions'. The intermediate actuating evers are displaced proportionally, the arms, however,being all ofthe same length. f To .cause more regular actuation of the actuating arms and to preventl over actuakeys, the cam4 arm is in the form of a gooseneck, as best shown in Figs; 3 and 4,t eend of the arm being turned back to'form the re- 97, and the cam roller is confined in the There is also an extension 104 the normal position ofthe keys engages against the plate 43 or vertical sup orting walls 105 of the drivin frame 46.` here isf" also a projection 106 rom the end of each goose-neckextendiiigforwardly. This is for the purpose of preventing simultaneous ac- Fig. 4, Where one key is shown depressed the cam roller on the lever arm 100 will be outside of the retaining projection 103 of the corres ondin goose-neck, and if thisgoosenecks culd e drawn down upon depression of the key lthe roller upon release of the keys WillA en ageover. .the top of thegoo'se-neck and so 'lock the machine. The roller, howjection 106 and another ke cannot, therefore, .be depressed when the rst key is down. Each wing frame 94 has a cam projection 107 from near the center of its periphery, and the cam face 10.7 and the'edges' 108 and'109 e'rably concentric Awitht e shaft 93. ong the edge 'of the upper end of each wing frame', which edge is concentric with the shaft 93, isa pluralityr ofteeth 110 adapted for engagement with a locking tooth or web 111 Iifted. between the end walls' 41 and 42. e distance between the ivot line and the point of the locking web p us the distance of l the center' line of the shaft 93 to the teeth 110 is slightly greater than the distance between the center line of the shaft 93 and the pivot line ofthe locking web. Inth'e normal position of the keys as shown in Fig.' 3 the' wing frames will be up and the teeth thereon will be back 'ofthe locking web. U on de- Aso' ward the left and 'also `the sleeve 77 pivoted'thereto, and the segmental gear frame engaging in the slot 78 wil be swung to the' left to a vertical position, as best shown in Fig. 5, into meshing engagement with either the gear 56 or the controlling gear 52.' The cam 'arm'96' upon depression of a key is not im'- mediatelyv positively actuated, but lat the instant that a roller shaft en agesA the camr surface 107 the endof the s ot 99 will engage the 96, and w ile the roller shaft rolls over the cam surface 107. `to hold the segmentalgeai inmeshing engagement the cam surface 97 becomes effective to cause the proper rotaost 98 extending from the shaft.

tion of the corresponding actuating lever I 100 and the shaft 69 to cause the engaged indicating mechanismnumber wheelto be rotated a distance corresponding tothe num- 'ber key depressed.

After the cam roller on theactuating lever reaches the cam surface concentric with the shaft 93 there will be no further rotation of the segmental gear and the roller shaft leaves theV cam surface 107 and is restored by gravity tov its normal 'position to rest against the surface 109 of the wing frame94. The link and bell crank lever mechanism is also returned to its normal osition as by a spring 113 and the segmentalgear returned to its normal position out of mesh With-the driving gear, :this normal position being lshown in Fig. 3. Upon depression of the key, also, the 'teeth 110rar'e carried'b the point of the locking web 11-1, this web being eld in engagement with the teeth by the springs 114. The osition of the teeth s ould be such that t e locking point will be in en a ement with teeth an instant before the s a t roller 92 comes 'into engagement with the cam surface 107 vand before the cam surface 97 becomes effective, and also that the point will still enga e teeth an instant after the roller leaves-t e cam'projection. lt will be seen that there can be no restoration of the typewriter key to its normal position until the key has been deressed its proper distance to, carry the wing rame teeth beyond the locking web point.

"s Y "normal -position by spri i klownin 1f is not done andthe key released the Y 'partswillnot be restored'because. of the di- I -qmensins of the locking web and wing frame H' before specified'.A If the key has valre ady been sufficiently depressed it mayreturn to its mechanism well y t'pewritmg mac 'nes,and the cam arm 9v6-an wing frame 94 will move toward their'norrnal position, the roller shaft again Vlolbeln'gfca.rrled 1ntoengagement with the cam "surface 1071-,to 'cause Vbackward rotationvof g thisfrollerjshaft -about the shaft 89. .The l" effectsofthisrearward rotation ofthe shaft ,'shown in Fig. ,4 when t l ',intdengagement withthe surface 108. T

11 cam'arms upon yrelease of thegke` Will at ,89 and th'earms 88 thereon will not be felt by theflihnkand bell crank mechanism conliectg'adwlth the segmental gear' on account .bf the slot 86'in the Alink 85 ,'the'post 87 passto thelower end of said'slot'as the' shaft er passes over .the cam surface 107 and ro movingback to the uplper normal position first not beactuated but when the owerY end `of the slot 99 lreaches the post 98 the goose-` neck. will be disengaged from the corre- 1.1 .fs-ponding. cam roller 101' and bly means of.

' jsprings'lljhe shaft 69 and thesegmental gearithereon will return totheir normalio sitio'n.v ffQThe locking web having become engaged from the teeth upon complete depresslonl of `thev key allows return passa ve therebyo the teeth 110, but there can e no subsequent depression or forward rotation of the frame 94unle`ss the key has been .sufficiently restored and the `wing frame teeth carried rearwardly beyond the lockin #web-point. locking web withthe teet therefore prevents the occurrence of errors .duettoi'nsuflicient actuation'or restoration lof; the keys and parts actuated thereby'.

' also'very im ortant that the indicating mechanism an veryimportant 'that any lateral fAK-iteindit `e drivingfmechanism frame.' "Enten earwardlyffrom. this lever-.near

Ythe piv')l hereof-isfthe locking arm 123 sculation fig el y the actuating wheel 49. be lockedagainst'rotation exce t when a cal- 'performe as Otherwise ,v accidental displacement' nsequently error.l It is l'also offth lhedlfupgn actuation ofthe v,rollelfshaft 92 A 'ffcan1--` proJection '107' upon depression ako adapted for engagement' in the slots '124 be# e shaft roller drops l movementv ndicating mechanism be prevented,v y while `he...actuat,1ng wheel 49 and Ithe indicatinglmechanism driven thereby are -in op- 'erationtbflfperform Va calculatlonQ." These d-:vryimportant features lare accom-4 Extghdiixg upwardly from'the shaft 89 is jarml'1`16 'from whose end extends the post gaging in the elongated slot'118 at the"` -th'linkvllQ pivoted at 120 .to the endg lver. 21 ivotedonfthe shaft 122 eri-1 tween the teethh125 cut in thelowerforward having the same spacing as the slots 38 at the upper edge of the frame 10,-`or7 in other Words,liaving the same spacing as the escapement carriage. Upon depression of akey the roller 92 engages the camsurface 107 ,f as before described, to cause rotation of the roller shaft v,about the' shaft 89whereby the arm 88.and the intervening mechanism is moved to swing the segmental gear into meshvwith the driving gear. At the same time also the arm 11.6 is rotated rearwardly 121 about its pivot shaft 122. Upon rotation of this frame 122 theend of the arm 123 is brought into engagement with the corre- -sponding slot 124 and the` carriage is 'premechanism frame securely held against latcause rotation of the segmental gear. In

moved to-cause actuation o the indicating framework is securely locked against lateral displacement. The escapement carriage and the supportingiframe 10 mayalso become displacedor distorted onaccount of lost mocalculations these parts must be in .proper position before actuation of the calculating therefore, are beveled; as best' shown in Fig.

beveled, so that entrance of the afin 123 into the' roper space is assured and the supportcarriage first' into properv position should the arm 123 during the entire downward movementA of the'number key. At the end .ofthe downward stroke the roller shaft drops from the surface 107 to the surface 109, and ,the carriag'emay esca e;

Pivoted to the shaflt crank lever 127 having at the end f its arm 1 28 a tooth 129 for en agement with'the teethof ythe actuating w veel-49. The other engaging inv the slot 132 through t e lever frame 121. UponA depression of a number key and the consequent 'rotation of the l .ver

draw. the tooth 129 from engagement with comes effective to rotate the engaged actuat- `upon return of the roller shaft to the surface 127Jjare returnedtotheir normalfosition '.thespring 133.. ''llhis is ttlie en ofga calcuother words, the' segmental ear will not be 5, and theend of the locking arm 123 is also y ing ame 10 connected with the escapement 'j 105 these parts havebecorne slightly displaced.`

The esca ement carria e and frame 10'are securely ocked against. rther movement by i larm 100, adat-the end of the stroke 109 thellever frame ,-12,1 and the bell 'crank' edge of the supporting frame 10, these teeth i to movethe link 119 and to rotate the frame I ventedfrom escaping, and the indicating eral displacement before the cam' 4arm 96 causes rotation of the 'actuating lever to .90 mechanism until the indicating mechanism tion or other causes, and to insure proper y mechanism. The edges of the teeth 125,1`

orfpost 126"is a-bell u vend 130 of the leverv terminates in a ost 131 121 the bell crank 127 will be rotated to with- I fthe wheel .49 just before the cam arm 96 belation, and the arm 123v being withdrawn from the correspondin `Islot 124 the escapement mechanism of t e machine becomes effective and moves theJ carriage. Av weight 134 might be employedvat the end of the arm 'diately u on depression of a key and held thus rigi ly during the entire' calculating A period. Upon release of the key thelroller shaft 92 upon engagement with `the cam extension 107 is rotated rearwardly about the shaft 89 andthe arm 116 on the shaft 89 rotated forwardly. .The slot 118 in the link 119, however, performs the same function as the s1ot186 in the link 85 of the .segmental gear swinging mechanism, ,and the post 117 on the arm 116 merely moves along the slot 118 without consequent motion of the lever `frame 121 and when the shaft roller again reaches the surface 108 the post returns to its normal position atithe rear end of 'the "slot11,8.

If a num-ber key isintended to be actuated but is not depressed its entire stroke the locking web 111, as before described, will prevent restorationi of the key. The operator notic-I ing that the key does not restore in this case can further depress the -key through its full stroke and the desired number will be enteredin the indicating mechanism.

If a key is struck unintentionally and throughout its full stroke and a number` unintentionally can then be moved to the subtracti added or subtracted in the indicating mechanismthe error can easily be rectified by `moving the gear controlling lever 62 to its other osition. is set 'or adding and a number key is umntentionally struck the gearing 'mechanism` position and the same key struck whic will result in the restoration of the indicating mechanism to its position before the key was' unintentionally struck. If, however, a key is unintentionally struckl and insufficiently moved so that .the locking web 111 locks the vkey a ainst restoration, or in the event that Y accesi rence between the t le actatlythe these keys can not "e de'-- cys are struck4 simultaneously and locked by the lockingwebagainst-restoration, means must be'provided for releasing these keys-and for causing the error introduced by, such unintentional key `actuation mechanism. i h j :It isvery commento accidentally strike twqlmmg, ke s at the,same-time, and on to be rectified or taken out ofthejindicating valso supports the locking web 11.1.

For instance, if `the ,gearing .ment with .a tooth tion, then, as shown in y Shaft 89 w O'se rotation controls the swinging K' lpressed their full dstancaand will consequently be locked against restoration. This simultaneous actuation of the keys causes a resultant rotation of the segmental gear and y the introduction of a corresponding error the indicating mechanism, and to rectify this error the segmental gear must be rotated in a reverse vdlre'ction to its normal or initiatf dr1v1ng 1position to remove `the error before the mec anism is operated which will swing the segmental gear from 'meshing engagement with the drivin gears.

As best shown in igs. 10, 17` and 18 lever frame 135 is pivoted to the shaft 136 bearing '.invthe, frame 137 secured to the frame v43.`

An arm 4138 extends from the frame 135 through the opening 139 in the frame 43 and is adapted for engagement with the tongue 140 extending from Y the hub 141 which,V

Adjacent to the lever 135 is a second lever142 on the shaft 136 having at its one end the projection or `ost 143 normally-engaging the extension or s oulder.144 on the frame 135. A spring 146 connecting between the frame 43 and the lever frame 1357.1iormally serves to hold theshoulder 144 against the post 143 Aand the corresponding-end of the lever 142 against the leaf s ring 147 secured to the frame 43. The otiterminates inV a hook 148. Extending from the shaft 89 are the posts 149 and 150, the

lpost 149 being adapted to be caught by the' ook 148 upon de ression of the lever 135 and the post 150 gaged by the shoulder'151. ivoted to the post 152Vextending from the frame 135 isa pawl frame 153 from whose tail end extends the post 151, normally held within the notch 154 1n the lower edge of the leverframe 135 by the spring 155, saidpawl frame having at its front end a tooth 156 adapted for engagel157 extending from the shaft 69. Y

Normally all the parts just described are in the position shown in Figs.' 10 and 17 If now -vthe one keyis unintentionally.l lightly struck erendof the lever 142 with the tooth 140.' As the key. was de- Y pressed the caih pro ection 107 was brought mtoengage'ment wit theroller shaft 92 and this shaft rotated about the shafth89which also caused the teeth 149 and 150 to be roftated rearwardly.; Engagement of the ex-v h tension 138 with the tooth 140 releases the 125- 'locking web 111 from the locking teeth 110,

and the ke jis released to're'store lts'elf.- r,The i mechanism of the Is/egi'nental gear is held against rotation because the hook 148 upon depression of the lever 135 is moved to catch the post 4149, this movement of the hook being caused by the pressure of the spring 147 'against the other end of the lever 151. Upon depression of the lever frame 135 the p'awl tooth 156 and the tooth 157 will merely move by each other without causing movement of the actuating shaft 69, as the pawl frame is held against rotation by the spring 155 only.

{Upon return of the lever frame 135, however, to its normal position, the pawl frame will be locked 'by the engagement of the pin 151 in the notch 154, and the tooth thereon coming into en'gagementwith the tooth 157 the shaft 69 is rotated back to its normal-po sition to return the segmental gear t0 its no rmal osition to correct the error unintentionally introduced upon insuflicient actuation of the one key 'or simultaneous actuation of the several keys. The hook 148 is released from the post 149 upon rengageinent of the shoulder 144 with the upper end .pf the lever 152, but this disengagement doesnot take place until the pawl tooth has passed upward suiliciently to cause rotation of the segmental gear back to its normal position. 1n other words, the segmental gear is prevented from unmeshing from the driving gears until it has been sufiiciently rotated to rectify the error. As before-stated, the post 150 is engaged by the shoulder 1 51. at the end of the downward stroke of the lever 135, the purpose of this being to causea slightly additional rotation i of the shaft 89 to lift the shaft roller from the cam surface 107 which lreduces the friction and allows the key and ring frame. to be more readily restored. The lever 1 35 is held in its normal position by the-spring 159, but to insure more positive operation o the correcting parts the lever frame may be returned` l tion of the segmental gear s aft otherwise' manually to its normal position. Thearriage is also locked against escapement by the arm 123 until the error is corrected.

In Figs. 8 and 9 I have shown two ositions of other controlling mechanism W ich en` ables the operator'tol release the 'calculating mechanism from the segmental gear, said mechanlsm also servingto reventactuaf than by striking the keys. A lever frame 160 has a slot 161 'near'its center in which engages-the pivot pin 162. The-rear-.end 163 -of the lever .'extends throughthe openingv 164 through the' frame 43 and is adaptedfor.

uengageme'ntwith the tooth 165 extending and .at ariint.ermediarvyff= point' 1 6 7 is vcnvnected by a spring 168 with the frame 43, resting against apln 1.69 projecting from the extension 170 from the lever 160, this being connected by a springr171 with the frame ,43. The end 172 of the-lever 166 is adapted upon downward rotation of the lever 160 to engage vwith the pin 173 extending from the shaft 89. When the lever 160 is rotated downwardly to the position shown in Fig. 9, the end 163 by engaging the tooth 165 'rotates the locking web 111 from the path of the teeth 110, and the springr 168 pulls the lever 166 to carry the end .172 into engagement with the pin 173 to cause 'the roller shaft 92 to be rotated upwardly from the path of the cam projection 107, this rotation of the shaft 89 being permissible on account of the slot 86 in the link 85 connected with the segmental gear swinging mechanism. A post 174 extends from the end 163 and is adapted for engagement at .either side of the head 175, and lo set thc 175 by virtue of the springs 168 and 171.

Upon actuation of a key after' setting of the lever as shown in Fig. 9, the goose-necks will be actuated to rotate the shaftv 69 and the.`

segmental gear thereon, but as the roller shaft 92 has been carried from the path of.

arm 177 of this third lever is held in engagement by the spring 178 with a post 179 extending from the lower end of the extension 170. The lower arm 180 'of this third lever is normally directly before the roller shaft 92. A tooth 181 extends forwardly from the leverl frame 176 above the shaft 177 and a `shoulder 182 on thearm 183 extending from the shaft 69 is normally in engagement with this tooth so that actuation of the actuating levers 100 and of the shaft 69 is normally revented. Directly uponv depression of a ey, however, the roller shaft 9 2 is engaged by the cam proiection 1 17 and pushed against the arm of the lever 176-5to rotate this lever towithdraw the tooth 181- from the shoulder 18,2 yt'o allow actuation of the levers 100 by the 'goose-neck frames to rotate the segmental gear. Depression of the lever .160', however', causes the roller shaft 92 to be'moved from the cam projection 107 but the shaft 69`is unlocked as the post' 179 isN A 'proJection 185 also extends from thesh carried'against the end 177 of the lever-5L76:'-

ft' -69a1id 4by strikin against the lower edge i'18,6 'of theend wa 41 limits the return' motion of the; ac'ttiating' levers .100, This man-i I Secured to-"the left face of each totalizer nerq'of locking the shaft 69 against rotation until a'key is struck and limiting the return movement of the actuatinglevers prevents undesirable actuation of the parts due to jarring or rebounding. 1 The totalizer mechanism best shown' in iFigs. 3, 4, 5 and 11A is contained betweenthe side' walls -32 and 33, these walls as *before stated, being provided at their rearedges are aplu'rality of totalizergear wheels 191,

each meshing with the gear of the corresponding number wheel, the teeth of these gears extending below the lower edge of the side walls of the frame 31, and as this frame is carried horizontally across the' machine 'and over the driving and actuating wheel 49v this-actuating Wheel'will successively mesh with-the totalizer 'gears and upon depression then of akeythe engaged totalizer Wheel will be rotated to revolve lthe corresponding .number wheel 4a cor-'responding lnumber of divisions. Although any' gearing relation i 'may be empl oyed 'the totalizer gears gare 85 ,shown 'asprovided with thirtyteeth and the.

gears on}.the number wheels .are provided with ten teeth makingthe' gearing proportion three to one', and for every one third of -revolution of a total'izer gear the number wheel will -turn one revolution.

gear isa thin gear plate 192 having three teeth 193 displaced 120 i degrees, and" adja- `cent -to this gear plate is a cam plate'194 hav? grees and disposed'directly opposite the teeth,

- the diameterA of this'cam plate being' slightly lflessthan that of .the gear pl ate, the gear plate and cam plate constltutingpart ocarryover mechanism: Above the totalizer 'gear shaft these two shafts being at equal distances from -the 'totalizergear shaft andparallel thereto. -On eachvof these shafts are mounted sets of carryover and locking gear mechanism, 'eaclrset vconsi'sting of a pinion plate .198,

' a star wheel 199 andacarryover-gear mechanism consisting of the' gearing pinion 200 and 1 the adjacent similar'pinion 200". 4The inemwhile tl1' me f be1 }=200; is-loosely pivoted on :the s .yg 'fgmspeetorthe member 200, bit` "'Oflockihgngagement, which 20ommmuyheldaeahertoformpmtinotches 201 having ing three notches 195 also displaced 120 d e.

is a third shaftf196 and a'fourth-shaft 197,

- ,ceptjatlt "e instantthatfa calcu bers 198,/199yand 200'are secured togetherh- 'taher shaft 190. On the upper pa" armis-"pivotedfa locki cally` an integral pinion. The inion plate 198 has ten teeth to mesh with t e carryover teeth.193 on the gear plate 192 4secured to a totalizer gear. The star' wheel 199 is provided with ten circular concave peripheral 7'0 the'same radius as the earn plate 195, this star wheel beingin engagement with the cam plate secured to the corresponding totalizer gear wheel. The inion part 200l of each set is in mesh with t e totalizer gear adjacent to the totalizer gear with whose cam plate and gear plate the star wheel and pinion plate of the set are in engagement. Normally a concave surface of each star wheel is in intimatffengagementwith the unbroken cam surface of the corres onding cam plate secured to .the correspon ing totalizerA gear, and when in' such p'os1tion there can be no rotationof the,carryover set on account of the greater radius at the points 202 between 35 the concave surfaces, but when a notch 195 of thev vcam late arrives below one of these oints ad ition'al s ace is afforded to allow or this longerl ra ius, and the carryover tooth 193 disposed opposite the articular 9 0 cam late notch upon meshing witii the pin- -ion p ate` can rotate this pinion plate and the star wheel and carryover wheel secured thereto. This rotation is transferred through the carryoverv pinion'parts to the ad- 95 jacentitotalizer gear Wheel.` Thus at every ten advancements of onetotalizer gear a carryovertooth 193lwill engage thepinion plate 1 98 en the corresponding carryover'set and at the same-instant the star wheel is released, whereu on the -carryover gear, which engages t 'e teeth of the next adjacent totalizer gear, will cause rotation of this adjacent gear. Owing `to the 'dimensions of the 'gears this adjacent gear will be advanced Vto cause .theengaged 'numberwheel to advance' one number.. In other words, at eachrotation of one number wheel from .zero to 9`the next actuation .thereof will move it to indicate zero, and at the sameinstant -the carryover set just'l described will 'be actuated to move the fi. next adjacent totalizer'.` number wheel one numberl To. afford more'compactarrangementofthe mechanisms within the 'side walls i 32 .and33 the c arryoversets'ae staggered ori-@C15 the shafts L96 and 1 97. V r

u #As the-S11 huesttouchwun be' einem to displace t Ie "totali-zer gears and Ve aging 'mechanism -i1',"is'\`rer'y important Elgat't ey be locked a ainst rotation, oldis l ement-'ex- -1'20 islto be performedgyi For this purfpse I provi rality floeking-.lev'ers'20 ivoted'dn 'eo moin-siiaft 204 secured to t e rear t e' totfece pinion 211|` for fe'ngagement withft e carryove 200 and 2007 o f`a carryoverset',

.these carryover pinion parts,A VThis.'

, wheel is the means be'fore referred to for normally locking the pinion part 200 to the part 200. Upon engagementof a carryover tooth 193 associated with one totalizer gear-with thepi'nion plate 198 of thel corresponding cara not revent rotation t lereof and the adjacent tota izer gear will berotated, but this adjacent -totalizer gear, however, meshes only with the part 200 and cannot be directly rotated because the locking wheel engagingv both the part 200 and part 20D-locks the part 200 against the part 200, which part 200 is ciate locked against rotation by virtue of the engagement of-a circular notch of the corre-V sponding star wheel' with the circular cam- -surfacesecured to the other totalizer gear. Thus normally each totalizer gear is locked against direct displacement and the possibility of errors practically eliminated. To allow calculations to be carried on, however, the locking wheel must be released from-the carryover set whose corresponding totalizer gear is about to be rotated by the actuating gear' 49. Each locking arm or lever therefore terminates at its lower' end below the shaft 204 ina plro'ection or finger 206 arranged .in a straig t orizontal line land adapted as the totalizer frame travelsto pass by in front of the end 4207 of the actuating arm 208 extendingu wardly from the lever frame 121 assowith the driving mechanism.

As before described, the lever frame 121 is -revolved aboutthe shaft 1.22 u on striking of the ke s and the end 207 wi therefore,

be carrie forwardl when a key is struck into engagement with t e finger 206 of the locking lever associatedV with the carryover setof the totalizer gear tobe'actuatedupon the depres-l sio'n of the particular key, Arthe adjustment being such; that the locking Wheel is moved from lockin 'engagement just before the segmental gear w1 l cause rotation of the engaged total-l lzer gear. As the'first totalizer gear to the y right is not p)receded by a carryover set ,other v means must e provided for normally preventing unintentional or accidental displacement thereof, this means being shown m Fig-12,

consisting of. a bell crank lever 209 also pivoted to the shaft 204 and having a finger 2 10 in alinement with the fingers of the locking levers 203. An arm 211 extends for# wardly and has a tooth 212 for engagement between the teeth of the first totallzer gear, andnormally held in engagement therewith by the sprin 213 connected between the the frame of the totalizer. Springs 214 connected between the totalizer frame andthe arms 203 serve to normally hold the .locking wheels 205 in en agement with the carryover pinions of te corresponding carryover sets, y

To prevent dis lacement of the lockinwheels whenthellbcking arms are raised, l

rovide bars or'wires 215 and 216 extending liom a` common hub 215 pivoted to the shaft 204. y'A s ring 217 secured to the framework holdls) these wires in engagement between the locking ear teeth. When a locking arm is aetuate the wires are raised to release the other locking gears so that the total-- izer gears maycarry over,the gear on the raised arm being however locked. To rotate the wire frame to release the locking gears upon actuation of the first totalizer gear, the lever 209 has 4an extension 210 for en aging the wire frame. To prevent undue the locking wheels with the carryover vpinions abutment screws 218 extending through the iction of I bar 219 are provided to form an abutment y for the ends of the locking levers.

Secured in. a liorizental position to -the driving mechanismvframe is a detaining bar 220, this bar extending. upwardly to engage the front of the fingers 206 and 210 on the locking arms. In front of the end 207 of the arm 208, however, a slot or passageway 221 is cut in this bar 220 and only the lockin .le-

ver Whose finger is about tobe engage byi the end 207 can be actuated, all the other locking 4bars being themselves locked as their fin ers are held b the bar 220.

' rThe number w eels and the totalizer gears areplacedingroups for example units group, thousands group, millions grou and so on, there being a space between eac group of totalizer gears, and thus when the numbers are' printed onthe sheet they will be properly Vgrouped without. the necessity of printing periods or commas. Thus the operator wishing to strike off a sum on the keys starts say in the thousands column and strikes the numbers in the thousands division, whereupon she must strike the spacing key before proceeding to strike -off the numbersin-the undreds 'group and'so on. If she should neglect to space and should strike a number keyi'instead there will` be confusion anderror. To prevent this I provide extensions or rigid fingers 222 between the groups of actuating fingers of the locking levers 203. When a spacing division is now reached and the opios lioA

erator should attemptto strike a number keyins'tead of the spacing bar the end 207 of thearm 208 will strike the rigid finger 222 land the number key cannot be depressed owing to the inability of the lever frame 128, the

intervening mechanism and the shaft 29v to j rotate, the'roller shaft becoming then rigid, and upon engagement with the cam projection 107 preventing further depression of the key. This immediately notifies the operator that she must depress the spacing key before further calculations can be made. To aline g the totalizer gears to insure easy and properA .meshing eng totalizer gears about to be carried into mesh with the actuating gear 49 areengaged b this tooth an'if'properly alined, and the teet of the driving wheel 49 also extend a distance* over the side and theirgentrance edges are properly beveled as best shown in Figs and `4; The entrance edges of the gears 52 and 56V also extend a distance over-the side and are beveled as shown to insure easy and yroper meshing-connection of -the segmentall) therewith. l l i Y As beforestated, the totalizer frame is ad- 'ustable along .the traveling frame 10, ythe 'I y ocking. lever 37 and the slots 38'servin for this urpose, and the'starting position o the 'tota lzers may be adjusted ytocorrespond with `that of the typewriting machine.A To

render it lunnecessaryfor the operator -to strike off the spacing onthe s acing bar of the typewriterv to bring the tota izer gear into engagementwith-the actuating ear 49tabulating mechanism may be used or' this purpose, and Eigs.` 1 and 15 show the well known r orm of tabulating mechanism employed in conjunction Awith Remington typewriters.

Thevtabul'ating keys 225 Varedisposed in a horizontal row at the front of the machine and connect by rods 226 with the levers 227 .pivoted at 228. and terminating at theirguper end in the lescapementi fingers 229. f ounted on the traveling carriage of the 4typewriter is a bar 230 rovided with teeth 231 whose pitch is e ua to the pitch ofthe 'escapernent teeth o the typewriter. 'escapement fingers 229 are The ouped in the rear of vthis actuating bar an are spaced to correspond with the teeth 231. Abutmen'ts 23,2are ada ted for adjustable insertion-in the teeth o the rack. 230 and arespaced thereon, to correspond with the spacing be- 'tween the totalizer gears and the starting point of. the typewritin 1 machine: By the proper s acing of these a utments it is necesated by saryy o `y for 'the operator to `depress the proper tabulating key and the esca ement carriage will Vtravel directly to bring t e cor# responding totalizer ear into mesh with the driving gear. It isy a so evident that instead of only one totalizer as shown a greater number can be inserted on the frame 10 to be actuthe driv' Ordlnaril v mechanism. the lstance between the total- 4 izer gears o a group should be equal to the .spacmg distance of the machine sc that'upon 4 tenth o an inch. A great deal of mechanism, however, must be crowded' in between gear wheels and at the same time this mechanismy such as gear wheels and gear gear 'is consideral plates must be :suiiciently wide to insure pro er meshing relation. before scri ed, a gear plate and 'camplate "are-lsecured to onevside of. eaclr gears-wheel, w

and between each gear wheel and tlieadjacent geaxgwheel` there must be space to receive the number wheel and also the number wheel gear which mesheswith the totalizer"l gear. l- There must also be room-between these gear wheels for thepinion plate, star wheel and carryover pinion rparts of the cor#L gear wheels must be of sufficient width, to Insure proper 'meshin relations as before stated. It can easily' e seen however, that resionding carryover set. hese gear plates an partsvmight therefore be,toos1nall to insure proper, coacting. relations a'nd errorv Vmight result. The s ace between groups, however, ly largerl than between gear wheels.' l'

In Fig. 16 I'havedia ammaticall shown improved spacing for t `e ear-'Whee swhich takes the surplus space om between the groups and distributes'it between the totallzer gears. The ear wheels and the various parts attached t ereto are shown, and zthe relative positions of the actuati wheel 49v .i il y" with but one tenth of an inch available thesel as the totalizer frame travels are a so shown.

meshin widthv of the actuating Wheel 49 is also su ciently eater than-thatof the ear wheels so that t ere will always .be mes In engagement. 49 is' shown in full linesand the subsequent etween grou s- The rst position of the whee positions relative -to successive gears are shown in dotted lines. The first gearwheel then engages .at the center of the wheel 49. The next gear wheel engages to the left of the 'ilo y.

center, the next wheel tothe right of the center, the next gear wheel' again at the center and sov on: Thus without losing any efliciency I am enabled to increase'the available space betweengearwheels suiiiciently to ac uire proper dimensions for the delicate wor g parts.` The totalizer parts'4 may be further protected by ythe `covering 233 which fits about the front and lower edges 234 and 235 of the side walls 32 and '33' and suitably secured thereto. In the front of this Ecover' a number of openings 236 may be provid-d in a horizontal rowto exhibit the rowV of numbers on the totalizernumber wheels. An illdicating plate or -scale 237 may also be proon the totalizer frame having the dis lines 238 corres onding to the grouping of the gear Wheels an a pointer 239 secured to the t ewriter frame will indicate on this scale whic totalizer gear is being actuated upon depression' of a key. The driving mechanism parts may also be concealed and protected by l a coveri-ng 240 having the 241 andopenm `242 through which extendt e en s 158 and 243 of the controlling levers 135 and 160 reknurled head whereby the lever 16()"I nay be better actuated, it 'being necessary to pull and push this lever while rotating it.

The operation of the device is now appar` ent. For illustration, suppose itis desired to 'add a 'column of sums, then, after the totalizer -frame is properly adjusted so that accumulated on the totalizer and alinement on the sheet.

the printed numbers will ap ear at the proper osition on the sheet, and t e totalizer numr wheels all indicate zero, the prol er tabulating key for the'first sum is struc where'- after the number keys of the machine are numbers ef the sum on the totalizers. The escapem'ent 'carriage is then returned to its initial osition, the,v rinting roller being adsheet,- the proper mechanism being` first,

however, actuated to reversevthe rotation 'of the driving mechanism and the result will be that the number wheels willbe returned to zero'and the accumulated sum total of'the added numberswill be placed on the sheet below the added numbers. The different mechanisms and their o erations for producing these results have been sufficiently described beforev and it will not be necessary to re eat them here. A

thus provide a very useful and efficient device for performing calculations of addition connected with any tlyfpewritin machine without in any wa lnte ering wit the ordinary operation o the machlne. The construction and arrangement of these parts are very compact as described, Vand produce a ver neat appearance. y

hevarious locking features are suchv that i practically all errors dueto rebounding, mos

mentum or accidental'contact with the parts are prevented, while the various adjusting and correcting mechanismsemployed are so arra ed and constructed that they ma `be quic and readily actuated to restore alse or accidental actuations and to vcorrect in the spectively, the'cnd 243 being inthe vform of a nnation with a totalizer frame connected with successively struck to place thev remaining.

time. The proper tabulating key is struck.

thereof to cause latera swing of the segand subtraction which may be removably indicating'meclnlmism` anyy errors'resulting therefrom. 'The feature of locking the "carriage against escapement until the desired calculations are performed in .the totalizer is also very important.'A A' A Variations in the construction and arrangement fromthatv shown and described may be= made-without:departing'from the spirit of my invention. I do not, therefore,`wish'to be limited'thereto.

What I claim as new 'and desire to secure by Letters Patent is:

1. In calculating mechanism for attach-v ment to a typewriting machine, the combithe escapement carriageof the machine and comprism Aa pluralityototalizer gears iv-` oted in a orizontal row within the tota lzer frame, of'amain driving gear pivoted to the machine frame for meshing successively with lthe totalizer gears as, the totalizer yframe travels with the escapement carriagefa segmental gear, a supporting shaft towhih the segmental gear is pivoted to sw' laterally thereon, means associated with sai shaft and adapted upon actuation of a key ofthe ma'- chine-forY causing rotationuof the shaft with `the segmental ear, -means associated with the keys and a apted u on initial actuation mental gear into driving 'relation with the main driving' gear'before'the segmental gear' is rotated, a locking arm pivoted to the machine frame and associated with the keys, and slots spaced on the totalizer frame, initial actuation of the keyA causin said lockin arm to'be en aged in one of sald slots to-loc the totalizer rame against escapement durin the time that the se mental gear `is rotate to cause actuation o the engaged totalizer ear. 4 g 2. In a calculatin machine, the combina` tion with aV totalizer rame, ``f meansTor causing travel thereof across the machine, calculating mechanism Within the-totalizer `frame, a plurality of totalizer gears for the calculating'mechanism disposed in a horizontalline, driving mechanism for the machine associated With keys thereof and adaptedfor successive engagement with the totalizer gears asthe totalizer frame travels, means normally locking', the calculating mechanism against actuation, means normally locking the driving mechanism against actuation, means upon initial actuation of a key for releasin said locking means from the driving and ca culating mechanisms, and means upon l further actuationf the key for causing operation of the released driving and calculat- 1n peii'formed. y

3. In a calculating` machine, the combinaltion with a totalizer frame, of means for causing traveL'thereof, calculating mechanism supported from the totalizer frame and1 13o mechanisms whereby a calculation isr y totalizer mechanism, locking mechanism` adapted to travel therewith,l driving mechanisrn associated with keys of the machine and normally out ofdriving relation with the normally locking the totalizer mechanism against actuation, additional locking mech-l anism, means u on lmtlal actuatlon of akey l for causing sai( additionaly looking mechanism to be actuated to lock the totalizer frame against travel, means for then causing rel le'ase of therst locklng mecha'msm from the totalrzer mechanism, means during actuation of the locking mechanisms for causing said driving mechanism to be brought 'into driving relation with' the totalizer mechanism', means upon further actuation-of thekey for causing actuationof the driving mechanism and of the totali'zermechanism in driving relation therewith,l andmeans upon release of the key for causing the driving mechanism and the Ylocking mechanism tobe re# stored to their normal positions,

f4. In'calculating mechanism for attach. ment to typewriting machines, the combination with a totalizer frame connected with the escapement carriage' of the machine to travel therewith, yof driving mechanism mounted on the frame of the machine and associated with keys of the machine, means for normallly retaining the driving mechan- `ism out of ri ving relation with the totalizer mechanism o n the totalizer frame, locking means for normally' locking the t'otalizer mechanism against actuation, additional lockin .means associated with the keys for norma ly.' allowing escapementof the totalizer frame, means upon. initial actuation f a key for releasing the .locking mechanism from the totaliZer mechanism, means for I tuation of the totalizing mechanism, said- 'leo causing `actuation o f the additional lockingmechanism to lock the totalizer-frame against. travel independently of the escapement mechanism of the machine, means for causing the driving mechanism to be brough-t into driving relationwith the totalizing mechanism, said locking Amechanism and means for bringing the driving mechanism linto driving 'relation being actuated `substantially simultaneously, and means upon further actuation of the key for causing actuation of the driving mechanism to cause aclocking and drivingmechanisms being freof a key actuation. l l i 5. In a calculating machine, the combinarturned to their normal positions at the end tion with indicating and calculating mechanism carried o n a supporting frame, of means for causing advancements of the'supporting frame, driving mechanism supported Afrom the frame onthe machine, keys' for the machine, cam mechanism intervening between said keys and the driving mechanism for. causing actuation of the driving mechanismupon depression of a key., a shaft pivoted'to the machine frame, cam mechanism adapted upon actuation with the key to cause rotation of said shaft, and a locking lever pivoted to the machineframe and having connection with said shaft, actuation of a key causing first actuation of the cam mechanism associated with said shaft and locking lever t0 lock the supporting frame to the machine frame to preventadvancements thereof and causing then actuation of the cam mechanism associated with lthe driving mechanism' to cause 4actuation of the driving mechanism and the indicating and calculating mechanism connected therewith.r

6. In a calculating machine, the combina-` tion with indicating mechanism carried on a supporting frame adapted to travel, of driv.- ing mechanism supported from the machine frame and associated withY the'indicati'ngv mechanism, keys for the machine, mechan-A ism connected With said keys and with the driving mechanism adapted upon'depression of a key to cause' actuation of the driving mechanism and of the indicating mechanism connected therewith, a pivot shaft, an actuating arm secured t0 said shaft, cam frames -l actuated upon depression of keys for engag- 'ing said actuating arm to cause rotation .of 4saidpivot shaft, a locking'lever pivoted toY .the machine' frame and.. connected through shaft, initial depression of a key causing first rotation of said pivot shaftfto move the locking lever into locking engagement with ,the supporting frame forv the indicating mechanism whereby said supporting frame is locked tion ofthe key causing actuation of the connectlng mechanism to cause actuation of the driving mechanism and the indicating mechamsm connected therewith, .the lockin engagement of the locking lever with the mdiinterveningy mechanism with said pivot.

against advancements, and further depresl v"eating supporting frame being maintained.

throughout the entire actuation of the indieating mechanism by the driving mechanism. 7 Inalcal'culating machine, the combina'- tion with indicating mechanism mounted on a supporting lframe adaptedto travel, of

"driving mechanism associated with the indicating mechanism, keys for thel machinei cam mechanism connectedwiththe ke s an with the driving mechanism anda apted u on de ression of a key to cause actuation oil the riving mechanism and indicating mechanism 'connected therewith, a cam .frame connected with ea'ch key, a shaft to which said cam frames. are pivoted, a cam' surface orneach cam frame, a pivot shaft, an

actuating arm secured in saidpivot shaft and disposed in the path of said cam surfaces,

'actuationof a key and of a cam `framecausing engagement Aof the camv surface with said arm to cause rotation ofthe pivot shaft,"a locking arm pivoted to the' machine frame, lever mechanism between said arm and an theindicating mechanism wher .has been carried into locking arm extending from'the pivot shaft, initial actuation of a key causing rotation of the cam frame andthe cam surface thereon into engagement with the actuating arm to rotate the ivot shaft and lever 'mechanism-to cause the llocking arm to .be carried into locking engagementv with the 'supporting frame for ev y said supporting frame is locked against advancement,- and further actuation of the key causingv the `other cam mechanism'to actuate the driving mechanism to cause operation of the indicating'rnechanism, there beinggno actuation of the mechanism to move the indicating mechanism until said Locking arm engagement.

8. In a calculating machine, the combination with indicating mechanism mounted on asupporting frame adapted to travel, of driving mechanism for the indicating mechanism supportedfrom the machine frame and norma y held out of driving relation'with the indicating mechanism, keys for the machine, a camframe for each key having a cam surface, a dpivot shaft, an actuating arm A .secured to sai pivot shaft and disposed in the path of the cam surface, mechanism inl*"tervening between said ivot shaft and the driving mechanism, an mechanism intervening between saidjke s and the driving mechanism,- actuation o `a key causing first actuation of al cam surface to rotate the vpivot shaft and to cause actuation of the mechanism connected therewith and with the driving mechanism to move said driving mechanism into drivin relation with the 'indicatingl mechanism, urther actuation of the.- key t en causingactuatin of the intermechanism and driving actuationof the driving mechanism whereby the indicating mechanism is actuated'. v

9. Ina c'alculating'machine, the combination'with indicating mechanism mounted on asfup'portin frame' adapted to travel, of

`driving'm'ec anism for the indicating mech- 1,-, anisin'supportediom the machine frame y andy'normally'held out ofl driving relation with'the indicating mechanism, keys for the.

machine, a cam frame for each key having a; cam surface, a ivot shaft, an actuating arm Secured to sai pivot s haft and ,disposed in thepath ofthe'cam surface, mechanism interveningbetween said iv'ot shaft-arid the driving mechanism, mec anismv intervening between said keys' and thedrivin mechanism, actuation of a key causingrstactnation of a cam surface to rotate the pivot 'shaftand to cause actuation of* the mechanism connected therewith and with the driving mechanism to'vmovfe said drivin mechanisrn into driving relation vwith the indicatingmechanism, further actuation of the key then Icausing actuation of theintervening mechanism and of the driving mechanism ated, and locking means for locking said indicating mechanism supporting frame securely against travel'during the time that the indicatingimechanism is being actuated. 10. In a calculating machine, the combi-- nation withiindi'cating mechanism mounted on a supporting frame adapted to travel, of

driving mechanism for causing actuation of Vthe indicating mechanism su ported from themachine frame and normal y out of driving relation withv `the indicating mechanism,

caring,l mechanism for the driving mechanism, a shaftto which said gearing mechanism is pivoted, cam 'arms extending from said shaft, a second shaft pivoted to the machine frame, cam ari'iis on said shaft connected with key's ofythlmachine and adapted upon sufficient actuation of a keytoengage the '.cam arms on the ,driving mechanism shaft to cause rotation thereof, a cam frame foreach key on saidsecond shaft'havinga cam surface, a pivot shaft mounted on the machine frame, an actuating arm vsecured to said shaft for engagement with the cam surfaces on the cam ames, and lever and link mechanism connected with said pivotshaft `and with 'the drivin gearing mechanism, initial actuation of a ey causing rotation of the connected cam frame to rotate the ivot shaft to cause actuation of the lever an link mechanism to move` the driving gearing into driving relation with the indicating mechanism, further actuation of the key causing engagement-0f the corresponding link arms y connected with the secondzshaft and with the driving :mechanism shaft whereby said driving gearing is rotated to actuate the indicatin mechanism'after'having been moved into' riving relation therewith.

11. In a calculating machine, the combiy nationwith indicating mechanism carried on a supportin frame 'adapted to travel, of

driving mec anism normally out .of driving relation with the indicating mechanism, a shaft from which the ,drivin-g mechanism is supported, actuating arms extendin from said shaft, ca m arms for engaging'sai the machine, a ivot shaft for said cam arms',

a cam frame.A a so connected'with-the keys and pivotedzon s aidcam arm shaft, a pivot '-.shaft, an,'actuating arm secured to the pivot shaft and adapted to be en a ed by the cam frame to cause rotation'o t e pivot shaft,'

lever and link mechanism connectin with the driving mechanism and with sai pivot vshaft and adapted upon actuation to move the driving mechanism into driving relation with the vindicating mechanism, a locking .arm pivoted to themacliineframe, linkand lever mechanism intervening between saidy Ylocking arm andthe pivot -shaft and ada ted 1 upon actuation to move thearm intoloc 'ng engagement with the indicating mechanism si orting frame 'to locksaid frame against actuatingar'ms and connected with the keys of v 

